Endoscopic reflux esophagitis and decline in pulmonary function in nonsmokers: A retrospective cohort study

Takayoshi Enokido; Yoshihisa Hiraishi; Taisuke Jo; Hirokazu Urushiyama; Akira Saito; Satoshi Noguchi; Keisuke Hosoki; Takashi Ishii; Naoya Miyashita; Kensuke Fukuda; Rei Matsuki; Chihiro Minatsuki; Takeshi Shimamoto; Hidenori Kage; Nobutake Yamamichi; Hirotaka Matsuzaki

doi:10.1016/j.resinv.2024.04.017

Endoscopic reflux esophagitis and decline in pulmonary function in nonsmokers: A retrospective cohort study

Respir Investig. 2024 May 1;62(4):599-605. doi: 10.1016/j.resinv.2024.04.017. Online ahead of print.

Authors

Takayoshi Enokido¹, Yoshihisa Hiraishi², Taisuke Jo³, Hirokazu Urushiyama¹, Akira Saito¹, Satoshi Noguchi¹, Keisuke Hosoki¹, Takashi Ishii⁴, Naoya Miyashita¹, Kensuke Fukuda¹, Rei Matsuki¹, Chihiro Minatsuki⁵, Takeshi Shimamoto⁶, Hidenori Kage¹, Nobutake Yamamichi⁷, Hirotaka Matsuzaki⁸

Affiliations

¹ Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
² Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. Electronic address: yhiraishi-umin@umin.ac.jp.
³ Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; Department of Health Services Research, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
⁴ Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; Division for Health Service Promotion, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
⁵ Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
⁶ Kameda Medical Center Makuhari, CD-2, 1-3, Nakase, Mihama-ku, Chiba, 261-0023, Japan.
⁷ Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; Center for Epidemiology and Preventive Medicine, The University of Tokyo Hospital, Tokyo, 113-0033, Japan.
⁸ Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; Center for Epidemiology and Preventive Medicine, The University of Tokyo Hospital, Tokyo, 113-0033, Japan.

PMID: 38696950
DOI: 10.1016/j.resinv.2024.04.017

Abstract

Background: The association between reflux esophagitis and pulmonary function remains controversial. Thus, evaluating the relationship between endoscopic reflux esophagitis and changes in pulmonary function over time in a nonsmoking population is an important clinical issue.

Methods: In this single-center retrospective cohort study, a medical examination database at Kameda Medical Center Makuhari was employed to identify nonsmokers who underwent upper gastrointestinal endoscopy and spirometry in 2010 and were followed up in 2015. Gastroenterologists carefully double-checked the diagnosis of reflux esophagitis. Multiple linear regression analyses were performed to compare the decline in the percentage of predicted vital capacity (%VC), forced vital capacity (%FVC), and forced expiratory volume in 1 s (%FEV₁) between participants with reflux esophagitis and those without. Furthermore, using multivariable logistic regression analyses, we evaluated the factors associated with rapid decline in %VC, %FVC, and %FEV₁, which is defined as a decrease of >10% in each parameter over the 5-year observation period.

Results: We identified 3098 eligible subjects, including 72 and 44 participants who had a Los Angeles classification grade A and B-C (severe) reflux esophagitis in 2010, respectively. The decline in %VC was significantly larger in the participants with severe reflux esophagitis than in the control subjects (standardized coefficient, -0.037; 95% confidence interval, -0.071 to -0.004). Moreover, reflux esophagitis was significantly associated with a rapid decline in %VC and %FVC but not in %FEV₁ (P for trend: 0.009, 0.009, and 0.276, respectively).

Conclusions: Severe reflux esophagitis among nonsmokers had clinical disadvantages in terms of a decline in %VC.

Keywords: Decline in pulmonary function; Nonsmoker; Rapid decline; Reflux esophagitis.